If you're reading a dense paragraph of text,and you come across a google.com link, your eye does not immediately recognize it as a link. But if you're reading a paragraph and you see a //google.com link... well now, that's a link!
Everything that's new and not normalized with a smiling, attractive face beside it gets written up as weird, until it gets normalized and becomes commonplace.
I'm asking HN: Can we collectively make this "//link.com" syntax not weird?